A) \[{{\tan }^{-1}}(1/3)\]
B) \[{{\tan }^{-1}}(3)\]
C) \[{{\cos }^{-1}}(3)\]
D) \[si{{n}^{-1}}(1/3)\]
Correct Answer: B
Solution :
[b] Velocity of rain with respect to car\[\overset{\to }{\mathop{{{v}_{RC}}}}\,={{\overset{\to }{\mathop{v}}\,}_{RC}}-\overset{\to }{\mathop{{{C}_{C}}}}\,\] should be perpendicular to the wind screen. i.e., components of \[\overset{\to }{\mathop{{{v}_{R}}}}\,\] and \[-{{\overset{\to }{\mathop{v}}\,}_{C}}\] parallel to wind screen should be zero. or \[6\cos \alpha =2\sin \alpha \] or \[\tan \alpha =3\] or \[\alpha ={{\tan }^{-1}}(3)\]You need to login to perform this action.
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